商品描述
Cisco Express Forwarding Understanding and troubleshooting CEF in Cisco routers and switches Nakia Stringfield, CCIE(R) No. 13451 Russ White, CCIE No. 2635 Stacia McKee How does a router switch a packet? What is the difference between routing a packet, switching a frame, and packet switching? What is the Cisco(R) Express Forwarding (CEF) feature referred to in Cisco documentation and commonly found in Cisco IOS(R) commands? CEF is a general term that describes the mechanism by which Cisco routers and Catalyst(R) switches packet-switch (route) frames. CEF is found in almost all Cisco routers and Catalyst switches, and understanding how CEF operates can improve the performance, scalability, and efficiency of your network.
Cisco Express Forwarding demystifies the internal workings of Cisco routers and switches, making it easier for you to optimize performance and troubleshoot issues that arise in Cisco network environments. This book addresses common misconceptions about CEF and packet switching across various platforms, helping you to improve your troubleshooting skills for CEF- and non-CEF-related problems. The first part of the book provides an overview of packet-switching architectures and CEF operation and advanced features. It also covers the enhanced CEF structure and general troubleshooting. The second part of the book provides case studies that focus on the common topics that have been problematic for customers and those supporting Cisco networks. Full of practical examples and configurations, this book draws on years of experience to help you keep your Cisco networks running efficiently. Nakia Stringfield, CCIE(R) No. 13451, is a network consulting engineer for Advanced Services at Cisco, supporting top financial customers with network design and applying best practices. She was formerly a senior customer support engineer for the Routing Protocols Technical Assistance Center (TAC) team troubleshooting issues related to CEF and routing protocols. Nakia has been with Cisco for more than six years, previously serving as a technical leader for the Architecture TAC team. Russ White, CCIE No. 2635, is a Principle Engineer in the Routing Protocol Design and Architecture team at Cisco. He is a member of the IETF Routing Area Directorate, co-chair of the Routing Protocols Security Working Group in the IETF, a regular speaker at Cisco Networkers, a member of the CCIE Content Advisory Group, and the coauthor of six other books about routing and routing protocols, including Optimal Routing Design from Cisco Press. Russ primarily works in the development of new features and design architectures for routing protocols. Stacia McKee is a customer support engineer and technical leader of the Routing Protocols Technical Assistance Center (TAC) team. This team focuses on providing post-sales support of IP routing protocols, MPLS, QoS, IP multicast, and many other Layer 3 technologies. Stacia has been with Cisco for more than six years, previously serving as a technical leader of the Architecture TAC team and a member of the WAN/Access TAC team.
- Learn the key features of packet-switching architectures
- Understand the basics of the CEF architecture and operation
- Examine the enhanced CEF structure, which improves scalability
- Learn how to troubleshoot in software-switching environments
- Understand the effect of CEF on a Cisco Catalyst 6500 Supervisor 720
- Configure and troubleshoot load sharing with CEF
- Evaluate the effect of CEF in an MPLS VPN environment
- Review CEF design considerations that impact scalability
Part I Understanding, Configuring, and Troubleshooting CEF
Chapter 1 Introduction to Packet-Switching Architectures
Chapter 2 Understanding Cisco Express Forwarding
Chapter 3 CEF Enhanced Scalability
Chapter 4 Basic IP Connectivity and CEF Troubleshooting
Part II CEF Case Studies
Chapter 5 Understanding Packet Switching on the Cisco Catalyst 6500 Supervisor 720
Chapter 6 Load Sharing with CEF
Chapter 7 Understanding CEF in an MPLS VPN Environment
Part III Appendix
Appendix A Scalability
This book is part of the Networking Technology Series from Cisco Press(R), which offers networking professionals valuable information for constructing efficient networks, understanding new technologies, and building successful careers. Category: Networking Covers: Routing and Switching 1587052369
商品描述(中文翻譯)
Cisco Express Forwarding
理解和排除 Cisco 路由器和交換機中 CEF 的故障
Nakia Stringfield, CCIE(R) No. 13451
Russ White, CCIE No. 2635
Stacia McKee
路由器是如何切換封包的？路由封包、切換幀和封包切換之間有什麼區別？在 Cisco 文檔中提到的 Cisco(R) Express Forwarding (CEF) 功能是什麼，並且通常在 Cisco IOS(R) 命令中可以找到？CEF 是一個通用術語，描述了 Cisco 路由器和 Catalyst(R) 交換機如何進行封包切換（路由）幀的機制。CEF 幾乎在所有 Cisco 路由器和 Catalyst 交換機中都可以找到，理解 CEF 的運作方式可以提高您網路的性能、可擴展性和效率。
Cisco Express Forwarding 揭示了 Cisco 路由器和交換機的內部運作，使您更容易優化性能並排除在 Cisco 網路環境中出現的問題。本書針對 CEF 和封包切換在各種平台上的常見誤解，幫助您提高對 CEF 及非 CEF 相關問題的故障排除技能。
本書的第一部分提供了封包切換架構和 CEF 操作及其進階功能的概述。它還涵蓋了增強的 CEF 結構和一般故障排除。第二部分提供了案例研究，專注於客戶和支持 Cisco 網路的相關人員所面臨的常見問題。
本書充滿了實用的範例和配置，基於多年的經驗幫助您保持 Cisco 網路的高效運行。
Nakia Stringfield, CCIE(R) No. 13451，是 Cisco 高級服務的網路顧問工程師，支持頂級金融客戶的網路設計並應用最佳實踐。她曾是路由協議技術支援中心 (TAC) 團隊的高級客戶支持工程師，負責排除與 CEF 和路由協議相關的問題。Nakia 在 Cisco 工作超過六年，曾擔任架構 TAC 團隊的技術領導。
Russ White, CCIE No. 2635，是 Cisco 路由協議設計和架構團隊的首席工程師。他是 IETF 路由區域指導委員會的成員，IETF 路由協議安全工作組的共同主席，Cisco Networkers 的常規演講者，CCIE 內容諮詢小組的成員，以及六本有關路由和路由協議的書籍的共同作者，包括 Cisco Press 的《Optimal Routing Design》。Russ 主要從事路由協議的新功能和設計架構的開發。
Stacia McKee 是客戶支持工程師和路由協議技術支援中心 (TAC) 團隊的技術領導。該團隊專注於提供 IP 路由協議、MPLS、QoS、IP 多播及許多其他第 3 層技術的售後支持。Stacia 在 Cisco 工作超過六年，曾擔任架構 TAC 團隊的技術領導和 WAN/Access TAC 團隊的成員。
- 學習封包切換架構的關鍵特性
- 理解 CEF 架構和操作的基本知識
- 檢視增強的 CEF 結構，以提高可擴展性
- 學習如何在軟體切換環境中進行故障排除
- 理解 CEF 對 Cisco Catalyst 6500 Supervisor 720 的影響
- 配置和排除 CEF 的負載共享問題
- 評估 CEF 在 MPLS VPN 環境中的影響
- 檢視影響可擴展性的 CEF 設計考量
第一部分 理解、配置和排除 CEF
第 1 章 封包切換架構介紹
第 2 章 理解 Cisco Express Forwarding
第 3 章 CEF 增強可擴展性
第 4 章 基本 IP 連接性和 CEF 故障排除
第二部分 CEF 案例研究
第 5 章 理解 Cisco Catalyst 6500 Supervisor 720 上的封包切換
第 6 章 使用 CEF 進行負載共享
第 7 章 理解 MPLS VPN 環境中的 CEF
第三部分 附錄
附錄 A 可擴展性
本書是 Cisco Press(R) 的網路技術系列的一部分，為網路專業人士提供有價值的信息，以構建高效的網路、理解新技術並建立成功的職業生涯。
類別：網路
涵蓋範圍：路由和切換
1587052369
作者簡介
Nakia Stringfield, CCIE No. 13451, is a network consulting engineer for Advanced Services at Cisco in Research Triangle Park, North Carolina, supporting top financial customers with network design and applying best practices. She was formerly a senior customer support engineer for the Routing Protocols Technical Assistance Center (TAC) team, troubleshooting issues related to CEF and routing protocols. Nakia has been with Cisco for more than six years, previously serving as a technical leader for the Architecture TAC team. She has given training courses on CEF operation and troubleshooting for internal employees. Nakia also worked for a year with IBM Global Services LAN Support in Research Triangle Park, North Carolina. Nakia attended North Carolina State University and completed her bachelor of science degree in electrical engineering in 1996. She also earned a master of science in computer networking and computer engineering from North Carolina State University in 2000. Russ White, CCIE No. 2635, is a member of the Routing Protocol Design and Architecture Team at Cisco, Research Triangle Park, North Carolina. He is a member of the Internet Engineering Task Force (IETF) Routing Area Directorate, a cochair of the Routing Protocols Security Working Group in the IETF, a regular speaker at Networkers, a member of the Cisco Certified Internetwork Expert (CCIE) Content Advisory Group, a member of the core team developing the new Cisco Design certification, a regular contributor to the Internet Protocol Journal, and the coauthor of six other books about routing and routing protocols, including Optimal Routing Design, from Cisco Press. Russ primarily works in the development of new features and design architectures for routing protocols. Stacia McKee is a customer support engineer and technical leader of the Routing Protocols (RP) Technical Assistance Center (TAC) team at Cisco in research Triangle Park, North Carolina. This team focuses on providing postsales support of IP routing protocols, Multiprotocol Label Switching (MPLS), quality of service (QoS), IP multicast, and many other Layer 3 technologies. Stacia has been with Cisco for more than six years, previously serving as a technical leader of the Architecture TAC team and member of the WAN/Access TAC team. She has created and presented training on packet switching, router architecture, and troubleshooting for internal employees. Stacia has also been a technical editor and reviewer of Cisco.com technical documentation, mainly in router and IOS architecture and IP routing protocols technologies. She works closely with the IP Routing and IP Services groups within the Cisco Network Software and Systems Technology Group (NSSTG) on customer problems and early field trials. In 2000, Stacia completed her bachelor of science degree in computer information systems, bachelor of science degree in business administration, and bachelor of arts degree in computer science at the College of Charleston in Charleston, South Carolina.
作者簡介(中文翻譯)
Nakia Stringfield, CCIE No. 13451, 是位於北卡羅來納州研究三角公園的思科（Cisco）高級服務部門的網路顧問工程師，負責支援頂尖金融客戶的網路設計並應用最佳實踐。她曾擔任路由協議技術支援中心（TAC）團隊的高級客戶支援工程師，負責排除與 CEF 和路由協議相關的問題。Nakia 在思科工作超過六年，之前擔任架構 TAC 團隊的技術領導者。她曾為內部員工提供有關 CEF 操作和故障排除的培訓課程。Nakia 也曾在北卡羅來納州研究三角公園的 IBM 全球服務局 LAN 支援工作一年。Nakia 畢業於北卡羅來納州立大學，於 1996 年獲得電機工程學士學位，並於 2000 年獲得北卡羅來納州立大學的計算機網路和計算機工程碩士學位。 Russ White, CCIE No. 2635, 是位於北卡羅來納州研究三角公園的思科路由協議設計與架構團隊成員。他是網際網路工程任務組（IETF）路由區域指導小組的成員，IETF 路由協議安全工作組的共同主席，Networkers 的定期演講者，思科認證網際網路專家（CCIE）內容諮詢小組的成員，正在開發新的思科設計認證的核心團隊成員，並且是 Internet Protocol Journal 的定期貢獻者，還是六本有關路由和路由協議的書籍的共同作者，包括思科出版社的 Optimal Routing Design 。Russ 主要從事路由協議的新功能和設計架構的開發。 Stacia McKee 是位於北卡羅來納州研究三角公園的思科路由協議（RP）技術支援中心（TAC）團隊的客戶支援工程師和技術領導者。該團隊專注於提供 IP 路由協議、多協議標籤交換（MPLS）、服務品質（QoS）、IP 多播及許多其他第三層技術的售後支援。Stacia 在思科工作超過六年，之前擔任架構 TAC 團隊的技術領導者及 WAN/Access TAC 團隊的成員。她為內部員工創建並呈現有關封包交換、路由器架構和故障排除的培訓。Stacia 也曾擔任思科網站技術文件的技術編輯和審稿人，主要涉及路由器和 IOS 架構及 IP 路由協議技術。她與思科網路軟體和系統技術組（NSSTG）內的 IP 路由和 IP 服務團隊密切合作，解決客戶問題和進行早期現場試驗。2000 年，Stacia 在南卡羅來納州查爾斯頓的查爾斯頓學院完成了計算機資訊系統學士學位、商業管理學士學位和計算機科學文學士學位。
